Lucky me! Thanks much to Nick and Peter Sasieni 
for this New Year gift! I look forward to the
SJ official Update of npt_s and (as always) to 
Nick's column.
--MW
>You're in luck, as Peter Sasieni, the author 
>of this program, and I have just finished 
>a cycle of debugging and modernising this 
>program. The Update will appear in Stata 
>Journal 5(1) in March, but I'll take the 
>liberty of forwarding the code privately. 
>
>Nick 
>[email protected] 
 
> I would like to use npt_s (STB-33) but I get return code 198 
> in stata 7
> and stata 8 as well. I also tried the command on the example 
> dataset as
> per the STB text but still no luck. Possibly someone has updated?
 
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